From 60ce8f7260d9ae4ff17548f5a275edfbc200187a Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 11 Feb 2009 20:06:43 -0500 Subject: [PATCH] powerpc32, ftrace: dynamic function graph tracer This patch gets function graph tracing working with dynamic function tracer on PowerPC32. Acked-by: Benjamin Herrenschmidt Signed-off-by: Steven Rostedt Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/Kconfig | 2 +- arch/powerpc/kernel/entry_32.S | 8 ++++++-- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index f50b1c41a699..e46995a21685 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -111,7 +111,7 @@ config PPC select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE select HAVE_FUNCTION_TRACER - select HAVE_FUNCTION_GRAPH_TRACER if PPC64 || !DYNAMIC_FTRACE + select HAVE_FUNCTION_GRAPH_TRACER select ARCH_WANT_OPTIONAL_GPIOLIB select HAVE_IDE select HAVE_IOREMAP_PROT diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 12247b937d25..0506f54b4237 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -1183,7 +1183,12 @@ _GLOBAL(ftrace_caller) ftrace_call: bl ftrace_stub nop - +#ifdef CONFIG_FUNCTION_GRAPH_TRACER +.globl ftrace_graph_call +ftrace_graph_call: + b ftrace_graph_stub +_GLOBAL(ftrace_graph_stub) +#endif MCOUNT_RESTORE_FRAME /* old link register ends up in ctr reg */ bctr @@ -1205,7 +1210,6 @@ _GLOBAL(_mcount) b ftrace_graph_caller #endif MCOUNT_RESTORE_FRAME - bctr #endif -- 2.20.1